19694105088 has 320 divisors, whose sum is σ = 63344160000. Its totient is φ = 5428641792.

The previous prime is 19694105083. The next prime is 19694105113. The reversal of 19694105088 is 88050149691.

It is a self number, because there is not a number n which added to its sum of digits gives 19694105088.

It is not an unprimeable number, because it can be changed into a prime (19694105083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15277948 + ... + 15279236.

It is an arithmetic number, because the mean of its divisors is an integer number (197950500).

Almost surely, 2^19694105088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19694105088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31672080000).

19694105088 is an abundant number, since it is smaller than the sum of its proper divisors (43650054912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19694105088 is an equidigital number, since it uses as much as digits as its factorization.

19694105088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360 (or 1330 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 51.

The spelling of 19694105088 in words is "nineteen billion, six hundred ninety-four million, one hundred five thousand, eighty-eight".